﻿using System;

class FactorialDivision
{
    static void Main()
    {
        decimal nFactorial = 1;
        decimal kFactorial = 1;
        decimal result = 0;
        for (int i = 10; i > 1; i--)
        {
            nFactorial *= i;
        }
        for (int i = 20; i > 1; i--)
        {
            kFactorial *= i;
        }
        result = (nFactorial / kFactorial);
        Console.WriteLine("N!/K! --> {0}/{1} = {2}", nFactorial, kFactorial, result);
    }
}
